Albert Chao

Albert Chao, listed as chief executive, has filed trades across 2 companies (mainly through SEC (Form 4)), most often in Westlake Corp and Westlake Chemical Partners LP. Over a trading history stretching from 15 February 2016 to 11 August 2026, the count stands at 110 filings.

On the open market, the record shows 29 purchases worth €2.7M and 35 sales worth €31.8M. The net balance comes to €29.1M on the selling side. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. Outside the open market, there are 14 share grants and 32 option exercises. So far in 2026, the count stands at no purchases and 2 sales.

In size, the median ticket on the buying side is €59k. On 22 out of 28 purchases, another insider of the same company was buying within the same 30 days. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.

The latest filing, published on 11 August 2026, reports an option exercise of €2.1M in Westlake Corp. The clock since the last published purchase (12 August 2021) now reads 1,896 days. Typically, a trade is published a median of 2 days after it takes place. The legal deadline for a Form 4 is two business days after the transaction. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.